Central Pennsylvania faces a significant weather threat today with an elevated risk of excessive rainfall and potential flash flooding this afternoon and evening. Residents should remain alert for
rapidly changing weather
conditions and be prepared for sudden thunderstorm activity.
A mid-level short-wave trough approaching from the Ohio Valley will trigger scattered thunderstorms by mid to late afternoon, with potentially torrential downpours. Precipitable water values ranging from 1.7 to 2.2 inches suggest a high likelihood of heavy rainfall, creating conditions conducive to localized flash flooding. The National Weather Service notes that while a formal flood watch has not been issued, the potential for sudden flooding remains high.
Temperatures will climb into the 80s with high humidity, creating uncomfortable conditions. By early evening, thunderstorms are expected to develop with the potential for isolated damaging wind gusts. River valley areas may experience dense morning fog before clearing, with hazy sunshine expected by late morning.
The weather pattern continues to be volatile on Thursday, with scattered thunderstorms persisting and heat indices potentially exceeding 100 degrees in southern areas. A surface cool front will approach from the northwest, bringing a slightly reduced risk of excessive rainfall but an increased chance of severe thunderstorm activity.
Looking ahead to Friday, conditions are expected to improve, with the cool front likely moving south of the region. Northern areas near Interstate 80 may experience a rain-free day, while southern counties could still see isolated afternoon thunderstorm activity.
The long-term forecast suggests a continued pattern of periodic thunderstorm chances through the weekend, with the highest probability of showers and storms occurring late Saturday through Sunday. By early next week, temperatures and humidity are expected to build again, potentially creating another heat-related weather event.
Residents are advised to stay informed about changing weather conditions, have multiple ways to receive weather alerts, and be prepared to seek shelter quickly if thunderstorms develop.
Weather reports
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More rain tonight, this week could mean more flooding: Here’s what to expect
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2 women die after their vehicle was swept away in N.J. flooding
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After a foggy morning, central Pa. can expect a sunny, dry day
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Lancaster County borough receives heavy flooding, leading to multiple car rescues
